CONSTRUCTION &
DESIGN
All aspects of TURNBULL
unit heaters and coils are constructed
to reflect the rigorous demands of today’s
industrial environment.
Cores in general are all steel construction.
Our standard 1”, SA-106 gr.B (.133”
wall thick) seamless fin pipe along
with our steel spiral wound fins assure
a uniform expansion and contraction.
Tack welding our (.024”thick)
steel fins to the pipe guarantee the
mechanical bond for a constant thermal
transfer, this process assures a constant
thermal transfer throughout the life
of the coils or unit heaters. Our standard
6 fin per inch more suitable for industrial
applications is resistant to blocking
from dust and debris. These types of
fin help to maintain a constant airflow
in turn giving many years of maintenance
free service.
Our rigorous Quality Control program
helps to assure that all of our steel
products rated at 450 psig. have passed
testing procedures at no less than 1,500
psig. hydrostatically. These high standards
provide us with confidence in our products.
For this reason you receive 3 to 6 year
guarantee on all cores operating with
steam.
An all welded construction protects
against leaks due to cores with dissimilar
metals that have been brazed or expanded.
Our welded steel design has been very
resistant over the past 40 years to
thermal shock, freezing, and water hammer.
All equipment can be custom
built to meet your design and material
requirements.
Options of Sch. 80 cores and connections
or our true non-freeze designs are available.
Materials
available with our product designs:
Heavy-duty steel cores, steel fins
Heavy-duty steel cores, extruded aluminum
fins
Heavy-duty stainless cores, steel fins
Heavy-duty stainless cores, stainless
fins
Heavy-duty stainless cores, extruded
aluminum fins
Other
materials also available upon request:
Heavy-duty cu/ni cores
(0.049” wall), extruded aluminum
fin
Light-duty copper cores, plate fin (Intended
for commercial or residential use).
Cabinets:
All casings and cabinets for steam coils
and unit heaters consist of a minimum
#14ga. steel
welded airtight construction. Also available
in stainless steel.
Coatings:
All products fabricated by TURNBULL
are supplied to the end user with the
standard epoxy
blue. Cabinets, casings and coil bodies
including the fins are coated to assure
the cores are
corrosion resistant the option of hot
dipped galvanizing or a phenolic coating.
